Snorkel mask



FIG. 1 is a perspective view of a snorkel mask showing our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a left side view thereof; and,

FIG. 7 is a right side view thereof.

The broken lines in the drawings depict portions of the snorkel mask that form no part of the claimed design. 

CLAIM The ornamental design for snorkel mask, as shown and described. 